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Headset
The headset is a rotatable interface between the front
forks in the steerer tube. During use, the headset is
subjected to considerable forces and torques, which
may loosen the bearing.
To check the headset play, place your finger around
the upper bearing shell. Apply the front brake and
push your bike to the front and back forcefully.
If the bearing exhibits play, the upper bearing shifts
with respect to the bottom shell.
To check for unrestricted headset movement, lift the
front wheel on the front frame triangle and steer to the
left and right. This movement must be performed with
very little resistance. Centre the front wheel and tilt the
bike slightly to the side. The front wheel must fall to
the side on its own.
Adjusting Ahead-set headsets
Both the Posche Bike RS and the Porsche Bike S
have an Aheadset headset. With Aheadset headsets,
the stem rests on the fork shaft and is clamped onto
it. The stem clamp secures the headset setting.
To adjust your Aheadset headset, you will need
an M4/M5 Allen key [ Bike RS, Bike S ], Torx T25
[ Bike RS ] and a torque wrench.
Open the stem clamp on the side by turning it around
once or twice. You can now adjust the headset in the
headset cover using the Allen screw.
Check the headset play by repeating the process
described at the beginning of this chapter until
the play has been set properly. Use an M5 Allen
key for this.
Once the play has been set correctly, align the stem
with the front wheel. Tighten the clamping screws
in the stem by applying the designated tightening
torques.
Loose headset.
A loose headset may increase
stress on the bearing and the front fork, which
may result in a fracture. Check the headset play
on a regular basis.
Loose stem.
A loose stem may cause a crash.
Check to make sure the stem is securely positioned
by holding the front wheel between your legs and
attempting to turn the handlebars. The handlebars
may not twist in the process.
Only specialists should adjust the headset.
Special tools may be required in certain cases.
Have the headset adjusted by a bike specialist.
Only specialists should adjust the headset.
Have the headset adjusted by a bike specialist.
Risk of damage to the headset bearing if set too
tight.
Carefully adjust the headset play in quarter
revolutions. Do not in any case excessively tighten the
screw.
Risk of damage to the stem and fork shaft.
Please observe the prescribed tightening torques.
Loose stem. A loose stem may cause a crash.
Check to make sure the stem is securely positioned by
holding the front wheel between your legs and turning
the handlebars. The handlebars must not twist in the
process.
WARNING
PLEASE NOTE
PLEASE NOTE
WARNING
INFORMATION
WARNING
INFORMATION
